Dolly’s Clones Are Living Long, Healthy Lives

Twenty years ago, Dolly the sheep proved to the world that cloning was possible, but her poor health didn’t exactly engender much confidence in the process.

However, her siblings, cloned from the same cell line, are serving as living proof that cloning is perhaps a viable, safe technology. They’re the equivalent of sheep senior citizens, and they’re still in good health. These four sheep cloned from Dolly’s cell line, as well as nearly a dozen other clones,¬†are part of an ongoing study at

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